1. Your computer has Intel's Calpella Intel® 5 Series Chipset, Intel® 3400 Series Chipset, or later chipset.
2. Your bluetooth radio has been enabled for Selective Suspend. You can check if Selective Suspend is enabled by going to "Device Manager" -> Bluetooth Radios -> <Your Radio>. Right Click and go to the Properties page. Go to the "Power Management" tab. If "Allow the computer to turn off this device to save power" is selected then Selective Suspend is enabled
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\usbflags\vvvvpppprrrr] "NoClearTTBufferOnCancel" REG_BINARY 01
where vvvv is a 4-digit hexadecimal number that identifies the vendor (idDevice from the USB Device Descriptor),
pppp is a 4-digit hexadecimal number that identifies the product (idVendor from the USB Device Descriptor), and
rrrr is a 4-digit binary-coded decimal number that contains the revision number of the device (bcdDevice from the USB Device Descriptor).
For example using the case of the Intel® 5 Series Chipset with vvvv=8087, pppp=0020, and rrrr=0000 the registry key would appear as follows[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\usbflags\808700200000] "NoClearTTBufferOnCancel" REG_BINARY 01
ID d'article : 2833716 - Dernière mise à jour : 2 avr. 2013 - Révision : 1